For non-hazardous locations
The SA-220NH is a fixed gas detector built for non-hazardous ambient-air applications. It pairs a full-color TFT display with plug-and-play SA2 smart sensor modules, so the detector automatically reads gas type, sensitivity range, and serial number at startup. An ABS housing, magnetic interface, and optional Bluetooth configuration through the OpCheck app make it a practical choice for commercial and light industrial installations where hazardous-area certification is not required.
Two enclosures. One non-hazardous platform.
Both models share the same SA2 smart-sensor core, full-color display, and digital interface — choose the enclosure and channel count that fits your installation.
SA-220NH Gas Detector
Non-hazardous fixed gas detector in an ABS housing. Single SA2 smart sensor configuration, full-color TFT display, magnetic interface, and optional Bluetooth configuration.
- ABS housing for non-hazardous locations
- Single SA2 smart sensor configuration
- Modbus RTU & 4-20 mA output
- Optional relay and Bluetooth output
SA-220B Gas Detector
The same detector platform in a polycarbonate enclosure for installations with different mounting, material, or footprint requirements. The SA-220B can carry two sensors and higher rated relays, with an optional AC power supply.
- Polycarbonate enclosure with optional AC power supply
- Higher rated relay contacts
- Single or dual SA2 smart sensor configurations
- Modbus RTU & 4-20 mA output
Intelligence at the sensor, clarity at a glance.
The SA-220NH collapses the traditional transmitter-and-sensor stack into one non-hazardous unit. Auto-identification, local event logging, and a high-visibility status ring give operators immediate situational awareness without extra wiring layers.
Fewer failure points
No transmitter-to-sensor wiring loop, no junction box translation layer. Two devices become one hardened unit.
Field-friendly service
Magnetic interface, Bluetooth configuration, and plug-and-play SA2 modules make calibration and replacement straightforward.
Intelligence at the source
Diagnostics, event logging, and status data are captured at the sensor - not interpreted second-hand by a separate box.
Read the room from across the plant.
High Visibility, High Resolution TFT display with a full LED status ring to clearly show readings and detector state. No squinting at a 4-20mA panel from a distance.
User Configurable Alarm Levels
Built-in intelligence, field-ready.
Bluetooth (OpCheck) app
Pair and configure sensor, detector, alarms, and run Bump, Zero Cal and Span Cal tests from an Android or iOS phone.
Last 10 Events
10 event logs held on the device - every alarm, fault, and configuration change captured locally.
GPS location tagging
Capture GPS on device to support site monitoring and continuous leak issues.
Device tagging and serialization
Tag the device with a specific location and/or ID for reference on monitoring map or SCADA system. Leverage serialization for traceability for both sensor and detector.
Where this product is deployed
- Non-hazardous fixed point monitoring in industrial facilities
- Standalone installations or networked to SCX
- Commercial and light industrial environments
- Integration with Modbus & 4-20 mA hosts and PLCs
Features & Capabilities
Universal Transmitter
- Full-color digital display
- Non-intrusive magnetic interface
- Plug-and-play SA2 smart sensor modules across a wide gas catalog
- Auto-configuration with the SCX control system
- 10 Event Logs
- Bluetooth connect to OpCheck® application for Android and iOS handhelds
- Optional relay output: 3 alarm levels and fault - 5 V, 2 A dry contact
Integration
- Serial Modbus RTU (single address) & analog 4-20 mA DC per active channel
- Power input: 10-30 VDC
- Power consumption: 0.75 W to 2 W (smart sensor dependent)
Environmental & Enclosure
- Temperature range: -40 °C to +60 °C (-40 °F to +140 °F)
- Humidity: 0-99% RH non-condensing
- Ingress protection: NEMA 4X, IP66
- ABS housing for non-hazardous locations
Area Classification
- Non-hazardous locations
- Suitable for commercial and light industrial ambient-air monitoring
Technical Specifications
SA-220NH Documentation
Product datasheet and full instruction manual for the SA-220NH Non-Hazardous Gas Detector - available to view inline or download.
Full specifications, features, and applications in a printable PDF.
Instruction Manual (Rev 3.3)
SA-220NH ManualInstallation, wiring, calibration, and maintenance for the SA-220NH Non-Hazardous Gas Detector - available to view inline or download.
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